diff --git a/toolchain/gcc/patches/4.3.1/400-arm_register_fix.patch b/toolchain/gcc/patches/4.3.1/400-arm_register_fix.patch
new file mode 100644
index 000000000..2fb5aa627
--- /dev/null
+++ b/toolchain/gcc/patches/4.3.1/400-arm_register_fix.patch
@@ -0,0 +1,24 @@
+Fixes GCC PR36350
+
+--- a/gcc/regrename.c
++++ b/gcc/regrename.c
+@@ -783,6 +783,10 @@ build_def_use (basic_block bb)
+ 		recog_data.operand_type[i] = OP_INOUT;
+ 	    }
+ 
++	  /* Unshare dup_loc RTL */
++	  for (i = 0; i < recog_data.n_dups; i++)
++	    *recog_data.dup_loc[i] = copy_rtx(*recog_data.dup_loc[i]);
++
+ 	  /* Step 1: Close chains for which we have overlapping reads.  */
+ 	  for (i = 0; i < n_ops; i++)
+ 	    scan_rtx (insn, recog_data.operand_loc[i],
+@@ -813,7 +817,7 @@ build_def_use (basic_block bb)
+ 		    OP_IN, 0);
+ 
+ 	  for (i = 0; i < recog_data.n_dups; i++)
+-	    *recog_data.dup_loc[i] = copy_rtx (old_dups[i]);
++	    *recog_data.dup_loc[i] = old_dups[i];
+ 	  for (i = 0; i < n_ops; i++)
+ 	    *recog_data.operand_loc[i] = old_operands[i];
+ 	  if (recog_data.n_dups)
diff --git a/toolchain/gcc/patches/4.3.2/400-arm_register_fix.patch b/toolchain/gcc/patches/4.3.2/400-arm_register_fix.patch
new file mode 100644
index 000000000..2fb5aa627
--- /dev/null
+++ b/toolchain/gcc/patches/4.3.2/400-arm_register_fix.patch
@@ -0,0 +1,24 @@
+Fixes GCC PR36350
+
+--- a/gcc/regrename.c
++++ b/gcc/regrename.c
+@@ -783,6 +783,10 @@ build_def_use (basic_block bb)
+ 		recog_data.operand_type[i] = OP_INOUT;
+ 	    }
+ 
++	  /* Unshare dup_loc RTL */
++	  for (i = 0; i < recog_data.n_dups; i++)
++	    *recog_data.dup_loc[i] = copy_rtx(*recog_data.dup_loc[i]);
++
+ 	  /* Step 1: Close chains for which we have overlapping reads.  */
+ 	  for (i = 0; i < n_ops; i++)
+ 	    scan_rtx (insn, recog_data.operand_loc[i],
+@@ -813,7 +817,7 @@ build_def_use (basic_block bb)
+ 		    OP_IN, 0);
+ 
+ 	  for (i = 0; i < recog_data.n_dups; i++)
+-	    *recog_data.dup_loc[i] = copy_rtx (old_dups[i]);
++	    *recog_data.dup_loc[i] = old_dups[i];
+ 	  for (i = 0; i < n_ops; i++)
+ 	    *recog_data.operand_loc[i] = old_operands[i];
+ 	  if (recog_data.n_dups)
diff --git a/toolchain/gcc/patches/4.3.3/400-arm_register_fix.patch b/toolchain/gcc/patches/4.3.3/400-arm_register_fix.patch
new file mode 100644
index 000000000..2fb5aa627
--- /dev/null
+++ b/toolchain/gcc/patches/4.3.3/400-arm_register_fix.patch
@@ -0,0 +1,24 @@
+Fixes GCC PR36350
+
+--- a/gcc/regrename.c
++++ b/gcc/regrename.c
+@@ -783,6 +783,10 @@ build_def_use (basic_block bb)
+ 		recog_data.operand_type[i] = OP_INOUT;
+ 	    }
+ 
++	  /* Unshare dup_loc RTL */
++	  for (i = 0; i < recog_data.n_dups; i++)
++	    *recog_data.dup_loc[i] = copy_rtx(*recog_data.dup_loc[i]);
++
+ 	  /* Step 1: Close chains for which we have overlapping reads.  */
+ 	  for (i = 0; i < n_ops; i++)
+ 	    scan_rtx (insn, recog_data.operand_loc[i],
+@@ -813,7 +817,7 @@ build_def_use (basic_block bb)
+ 		    OP_IN, 0);
+ 
+ 	  for (i = 0; i < recog_data.n_dups; i++)
+-	    *recog_data.dup_loc[i] = copy_rtx (old_dups[i]);
++	    *recog_data.dup_loc[i] = old_dups[i];
+ 	  for (i = 0; i < n_ops; i++)
+ 	    *recog_data.operand_loc[i] = old_operands[i];
+ 	  if (recog_data.n_dups)